/* CSS Variables */
:root {
    --primary-green: #4ECCA3;
    --secondary-green: #3D9970;
    --background-dark: #0A1612;
    --background-mid: #1A2F23;
    --text-primary: #E8F5E9;
    --text-secondary: #93C5B5;
    --accent-glow: #4ECCA380;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--background-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Particles Background */
#particles-js {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: -1;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
}

/* Navigation Bar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 22, 18, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(78, 236, 163, 0.1);
    padding: 1rem 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(10, 22, 18, 0.95);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-green);
    text-decoration: none;
    transition: all 0.3s ease;
}

.nav-logo:hover {
    color: var(--text-primary);
    text-shadow: 0 0 20px var(--accent-glow);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: var(--primary-green);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-green);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0 1rem;
    }

    .nav-logo {
        font-size: 1.25rem;
    }

    .nav-links {
        gap: 1.5rem;
    }

    .nav-link {
        font-size: 0.9rem;
    }
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
}

.hero-content {
    z-index: 1;
}

.hero-name {
    font-size: 4rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
    text-shadow: 0 0 30px var(--accent-glow);
}

.hero-tagline {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

.scroll-indicator {
    display: inline-block;
    animation: bounce 2s infinite;
    cursor: pointer;
}

.scroll-indicator i {
    width: 32px;
    height: 32px;
    color: var(--primary-green);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* Mobile Hero */
@media (max-width: 768px) {
    .hero-name {
        font-size: 2.5rem;
    }

    .hero-tagline {
        font-size: 1.2rem;
    }
}

/* About Section */
.about {
    padding: 6rem 0;
    background: linear-gradient(180deg, transparent 0%, var(--background-mid) 50%, transparent 100%);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.about-card {
    background: rgba(26, 47, 35, 0.5);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid rgba(78, 236, 163, 0.2);
    transition: all 0.3s ease;
}

.about-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-green);
    box-shadow: 0 10px 30px var(--accent-glow);
}

.about-title {
    font-size: 1.5rem;
    color: var(--primary-green);
    margin-bottom: 1rem;
}

.about-text {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* Mobile About */
@media (max-width: 768px) {
    .about {
        padding: 4rem 0;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

/* Projects Section */
.projects {
    padding: 6rem 0;
}

.section-title {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

/* App Cards */
.app-card {
    background: rgba(26, 47, 35, 0.5);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid rgba(78, 236, 163, 0.2);
    text-align: center;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.app-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-green);
    box-shadow: 0 15px 40px var(--accent-glow);
}

.app-icon {
    margin-bottom: 1.5rem;
}

.app-icon i {
    width: 48px;
    height: 48px;
    color: var(--primary-green);
}

.app-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.app-description {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.app-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--primary-green);
    color: var(--background-dark);
    text-decoration: none;
    border-radius: 4px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.app-link:hover {
    background: var(--secondary-green);
    transform: scale(1.05);
}

.app-link i {
    width: 16px;
    height: 16px;
}

/* Mobile Projects */
@media (max-width: 768px) {
    .projects {
        padding: 4rem 0;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }
}

/* Footer */
.footer {
    padding: 3rem 0;
    text-align: center;
    border-top: 1px solid rgba(78, 236, 163, 0.1);
}

.footer p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Fade-in Animation */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Focus States for Accessibility */
a:focus,
button:focus {
    outline: 2px solid var(--primary-green);
    outline-offset: 2px;
}

/* Smooth Scroll */
html {
    scroll-behavior: smooth;
}